dontcareanyonemo
19.11.2019 •
Mathematics
The owner of a local nightclub has recently surveyed a random sample of n = 250 customers of the club. she would now like to determine whether or not the mean age of her customers is greater than 30. if so, she plans to alter the entertainment to appeal to an older crowd. if not, no entertainment changes will be made. if she wants to have a level of significance at 0.01, what rejection region should she use?
1. reject h0 if t < -2.3263.
2. reject h0 if t > 2.3263.
3. reject h0 if t < -2.5758.
4. reject h0 if t > 2.5758.
Solved
Show answers
More tips
- H Health and Medicine How Many Ribs Do Humans Have?...
- H Health and Medicine Simple and Effective: How to Get Rid of Cracked Heels...
- H Health and Medicine Relieving Swelling in Legs: Causes and Ways to Alleviate the Symptom...
- W Work and Career Мерчендайзинг – все, что нужно знать...
- O Other Everything You Need to Know About Kudyabliks...
- F Food and Cooking How to cook crayfish? Everything you need to know...
- F Food and Cooking Homemade kvass: recipe and brewing process...
- H Health and Medicine How to Choose the Right Tanning Cream?...
- S Style and Beauty Secrets of Tying a Pareo: 5 Ways...
- S Sport Running: How to Do It Right?...
Answers on questions: Mathematics
- M Mathematics Help me find the answer please...
- M Mathematics Jury Selection A court has jurisdiction over five counties, and of the people eligible for jury duty, 14% reside in county A, 22% reside in county B, 35% reside...
- M Mathematics Julia owns a coffee shop. she experimented with mixing city roast colombian coffee that costs $7.80 per pound with french roast colombian coffee that costs $8.10...
- M Mathematics Harriett s age is 3 more than 2 times angela s age. if the sum of their ages is 51, how old is each girl?...
- M Mathematics Aliane created a table showing the flight information for four cities. departing from arriving at flight time city a city b 4.2 hours city a city c 3.9 hours city...
- M Mathematics If the terms at chase bank are a 10% down payment, an interest rate of 4%, a 30-year conventional mortgage and 3 points to be paid at the time of closing, calculate...
- M Mathematics use the following table to evaluate the given function composition...
- M Mathematics What is the sum of 5/12 and 1/3. write the answer in simplest form...
- M Mathematics How to express each decimal as a fraction...
- M Mathematics The distance train a travels is represented by d = 80t, where d is the distance in kilometers and t is the time in hours. the distance train b travels at various...
Ответ:
Option 2.
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = 30
Sample size, n = 250
Alpha, α = 0.01
First, we design the null and the alternate hypothesis
We use Right-tailed t test to perform this hypothesis.
Formula:
Now,
Decision rule:
For a right ailed t-test,
, we reject the null hypothesis as it lies in the rejection area.
, we fail to reject the null hypothesis as it lies in the acceptance area and accept the null hypothesis.
Thus,
Option 2.
Ответ:
I think that the answer is D